Concrete-block machine.



S. D. LINDSAY. CONCRETE- BLocK MACHINE.

Patentd Sept. 25, 1917.

3 SHEETS-SHEET l.

. y G y Patentedpt. 25, 1917.

3 SHEETS-SHEET 2.

S. D. LINDSAY. CONCRE BLOCK MACHINE. APPLlcMloN man m4, 1s, :915.

S. D. LINDSAY. CONCRETE BLOCK MACHINE. APPLICATION FILED IAN. I8. 1915.

Patented Sept. 25, 1917.

a SHEETS-SHEET 3.

7 `IIIIII III/,I I Ian SAMUEL DAVID LINDSAY, OF ORLANDO, FLORIDA.

CONCRETE-BLOCK MACHINE.

Specification of Letters Patent.

Patented Sept. 25, 1917.

Application filed January 18, 1915. Serial No. 2,867.

To all lwhom t may concern:

Be it known that I, SAMUEL DAVID LIND- SAY, a citizen of the United States, residing at Orlando, in the county of Orange and State of Florida, have invented certain new and useful Improvements in Concrete-Block Machines, of which the following is a speciication.

The invention relates to concrete block machines and has for its objectthe provision of a simple and efficient machine of the character mentioned which is adapted for use in forming blocks or bricks of concrete, or other plastic material, in different sizes. Other objects will appear hereinafter.

My improvement consists substantially in the combination and arrangement of parts hereinafter described and claimed, and will be best understood by referring to the accompanying drawings, forming a part of this specification and in which- Figure 1 is a plan View of a block forming machine embodying my invention;

Fig. 2 is an end elevation of the same;

Fig. 3 is a perspective view of a finished block;

Fig. 4 is an enlarged fragmental section taken on line 4 4 in Fig. 2;

Fig. 5 is an enlarged fragmental section taken on line 5 5 in Fig. 1;

Fig. 6 is a view similar to Fig. 5 but showing some of the parts of the machine in different positions than shown in said Fig. 5;

Fig. 7 is an enlarged fragmental section taken on line 7-7 in Fig. 1;

Fig. 8 is a perspective view of a pallet vused to form one side of the mold of the machine in forming a block; and

Fig. 9 is a section taken on line 9-9 1n Fig. 7.

The device consists, generally, in a sup-- transversely of the machine and form end members therefor. The end members 10 are spaced apart by means of bars 12, 13 and 14, the latter being secured to said end members 10 by means of bolts or their equivalent. Two of the posts 9 on one side of the machine, preferably the rear side thereof, are provided with upstanding extensions 11 which are smaller in cross section than the lower portions of the posts. Rigidly mounted in the bars or members 10 and extending longitudinally of the machine are two parallelbars 15 forming guides upon. which the end members of the molding form are slidably mounted. The mountings for the end members of the molding form comprise angle bars 16 having suitable horizontal perforations engaging the guides 15 and permitting such angle bars to be moved toward and away from each other upon the guides. Secured to each of the angle bars 16 and rising perpendicularly therefrom are two uprights 17, one of said uprights being rigidly secured to one of the angle bars 16 and the other of the uprights 17 being removably secured to one of the angle bars 16, the arrangement being such that the last mentioned upright 17 may be secured t0 its corresponding angle bar 16 at perforations 19 by bolts 19 or their equivalent. The purpose of securing the movable uprights 17 in different positions on the angle bars 16 is to provide means for holding end portions of the molds of different sizes. Thus it will be seen that in holding the smallest size of the end portions of the molds the movably secured uprights 17 will be secured in their positions indicated in Fig. 4, and when it is desired to use end portions of the mold for molding larger blocks such movable uprights 17 are moved to the different perforations 19 and secured to the angle bars 16 corresponding to the size of end portion it is desired to use, as will be readily understood. The end portions 1S of the mold are secured to the uprights 17 in any approved manner, the connection indicated being screws 17 passing through the uprights 17 into the end portions (Fig. 7

Pivoted to the central portion of bar 12, as at 20, s a lever 21. Near one end of the lever 21 is a perforation adapted to register with perforations 23 formed in bar 14. A pin 22 is adapted to pass through the perforation in lever 21 and one of the perforamoved on guides 15 toward and away from each other. The bars 24 and 25 have their adjacent-ends perforated and connected, as

at '26, by means of a pin and slot connection with rlever 21. The other ends of said bars 24 and 25 are rigidly secured to the angle bars 16. From this arrangement it will be seen that thel angular arrangement of the bars 24 4and will. maintain the angle bars 16/in vparallel relation toeaclr other atall oftheir positions on guides 15. Tofvi'acilitate maintaining the uprights 17 in parallel positions supporting members 27 are secured l to thebars 24 and slidably mounted `on the guides 15. These supports 27 operating. withr the guides 15 also maintain theE bars 24 and 25v in substantially the same plane thereby preventing. pivotal movement iof' the angle bars 16 on theguidesl. |The pivotal movement of lever 21 isrof a suliicient length' to permit the diiierentor desired sizes ot molding 'forms to be used in forming blocks offdiffei'ent sizes and also to move the end portions :18 otthe form away from theffinished block after the latter has been molded.

Unevside-'oi the moldingfoim 28 is` secured .tof'tli'e ugrights 11 and is provided with perforations Q9 through which core' molds 30 are 'adaptedi'to pass to enterthe molding forms. The coremolds 30 are se cured toangle bars 31 which extend laterally ol' the core molds and are provided with perforations engaging guides 32. The arrangement .is such that when the core molds 30' are moved out ot the molding orrnyasv shown in Fig. G, their ends will still be -in openings 29. means -for preventingthe `loss of material whiil'ethe lower portion of the form is being filled. Guides 32 are supportediby-having' their forward ends secured 'to bar 34 :carried by uprights 11 andtheir central portionsl secured to pins or' projections 33- onthe upturnedend lportions ofthe bar 13,-see particularly-Figs. 5 and' 6. Secured across the outer portionsof 4the guides .32 is a cross" bar 35 which carries al bumper 36, the'latter beingotI a yielding .material such as rubber.'

The-'cross bar 35 is positioned to limit the outer movement of thecore molds 30 and prevent the inner ends of such molds from being: removed fro1n.the'- openings 129.

Theiorm or moldmembersrare placedl :in

rlhis arrangement provides -1 their positions indicated in Fig. 5 to begin the molding operation, except the core molds 30 which are placed in their positions indicated in Fig. 6. Concrete or other plastic material is then tamped in the mold until it reaches the bottoms of openings 29 in side 28 when the core molds are moved into the mold to their positions indicated in Fig. 5 and more plastic material added to fill the mold. I form the core molds 30 hollow with their front ends open and openings 30 lnear their rear lends so that if some of the plastic material extends into the path of the core molds the latter will; cutthrough-such mate-`V VV here rial'and remove it'from ith-e path;

core molds are formed solid-any material in. their" paths would likely' be pressed against the pallet (.45 and requireextra' labor to' smooth the finished block.

The corefmold-'s'fBO 'are moved on" theirVy guides by means of lever 37 which is p1voted,1 f

asatBS, to crossbar13.Y The upper endof lever 37 engages-a'suitable pertorationlin one or. the anglewbarsfSl, as. indicated `in l Figs. 5 and 61. The lower endetleverf37-l is v'connected by mea-ns of a 'connecting .link `39to a manually operable"lever40,theflatteibeing pivoted-at a point 41 to 'a bar 42 and suehfbarsecured to two ofrthe posts-9f The lever-540' has' its 4handle end disposed in "a'L convenient position tothe .operator near 'the handle'end of leverfQl'so thatpone'operator may I'operate' thev machine. `without changing`- his position.1 1t .will be seen that upon throwing 'the'y lupper end of lever f 40' toward the front of thefmaohine, orl the side at whichrthe level 21 has its handle lend',y the eore'fmolds 30 will be movedinto-the mold form to positions, such as indicated in rality of parallel bars or rods 43, eachoitl which is adapted to form the pivotal point for angle members'lh.- A bottom 44 is secured tol one setof the parallel .portions of the end members 10"wheninioperative condition. of the-smallest sizefor 'which the machine is designed the anglfeaneinbers 46 are pivoted on the innermost ofthe round-bars 43, as-v indicated in Figs.: and 6, and when a 'block ofilarger: size isdesired, bottom 44 is re`` moved and la bottom of the desired `size se cured Itoitheangle members 46 andv thepiv otal point of such members is moved. to ani other "of lthe'barsr43 toward the front of the When it is desired to mold a block* the angle members 46--and adapted 'to 'have its end portions rest on the upper'edges-ot.

will fpermit one edge of 'thev new :bottom: '.44

- to engage the lower edge of back 28, as will be readily understood.

The other set of parallel portions of angle members 46 are provided with guides 47 and such guides are adapted to be engaged by tongues 48 formed on cleats 49 oi: a pallet 45 in order to removably hold such pallet 45 in position to form one side of the molding form. From this arrangement then it will be seen that to adjust the pallet 45 to angle members 46 or to remove it therefrom it is only necessary to slide the pallet 45 on to and from the second mentioned set of parallel arms of members 46. In forming the blocksa separate pallet 45 is used for each block. After the pallet is used in forming the block such block is permitted to rest on the pallet until thoroughly dried .before removing therefrom. By using the pallet :tor one side ol the form in molding the blocks there is little or no danger of breaking the block while still wet in transferring it to the place where it is to be dried.

A hoop or ring 50 is pivoted, as at 51, to the upper end portions of uprights 11 and adapted to engage the upper ends of uprights 17 and the upper ends of the set of arms oic the angle members 46 which support the pallet 45 in order to lock the ends 18 bottom 44 and side 45 in operative condition during the process of forming a block in the machine. At the upper ends of the set of arms of angle members 46 which support the side 45, are provided rings 53 which form handholds to facilitate moving the angle members 46 on their pivotal points, and formed on the rings 53 are stops 54 serving to support one side of ring 50 and maintain said ring in operative condition. The ring 50 is preferably made of sections secured together by means of bolts 52 or their equivalent. Adjacent the ends of the portions making up ring 50 are provided a plurality of perforations so that such portions may be adjusted to form rings of larger or smaller sizes to accommodate molding forms of different sizes, as will be readily understood.

From the construction shown it will be observed that portions of molding forms for molding one size of block may be easily secured in the machine, and when desired, portions of a molding form of a different size may be secured in the machine in place o* the irst mentioned molding forms, also that the parts are so arranged that only one operator is required to operate the machine. It is also obvious that the inner surface of the molding forms may be shaped in any suitable configurations in order to produce any desired faces on the finished blocks.

llhile I have described and illustrated the preferred form of construction of my invention I do not desire to be limited to the precise form shown and described but desire to avail myself of such variations and changes as may come within the appended claims. Y

1. A concrete block machine comprising a support; parallel guides in said support; a form having end Walls slidably mounted on said guides; a lever pivoted in said support between said end walls; two converging members, having their diverging ends secured to one of the end walls and their converging ends disposed adjacent one of said guides; slot and pin connections between the converging ends of said members with said lever; and supports secured to certain of said members adjacent said slot and pin connections and slidably mounted on one of the guides.

2. A concrete block machine comprising a support; two parallel guides in the support; a block molding form having end walls; supporting members carrying said end walls and each o'l' said supporting members having two points of support slidably mounted on one of the guides and one point of support slidably mounted on the other of said guides, said supporting members being adapted to maintain the end walls in substantially parallel relation in all of their positions on said guides; and a lever pivoted in the frame between said end walls and connected to said supporting members for moving the latter simultaneously on said guides.

3. A concrete block machine comprising a support; parallel guide bars in the support; two parallel members disposed transversely of and slidably mounted on said guide bars; a molding form on the support, the sides and bottom of the form being mounted on the support and the ends of said form being mounted on said parallel members; a lever pivoted in the support between the parallel members; connecting bars having one end of each secured to one of the parallel members and the other end ot each connected by means of a pin and slot connection with the lever; and members secured on certain of the connecting bars adjacent the lever and slidably mounted on the guide bars.

4. A concrete block machine comprising a support; parallel guide bars in the support; two parallel members disposed transversely of and slidably mounted on said guide bars; a molding form on the support, the sides and bottom of the form being mounted on the support and the ends of the form being mounted on said parallel members; a lever pivoted in the support between the parallel members; pairs of connect-ing bars, each pair comprising two bars disposed at an angle to each other with their diverging ends secured to one of said parallel members and their converging ends connected with said lever; members, each secured to one of said connecting bars near the connection of the latter and said parallel members provdngthree-- name `to this'fspecifloatom` in the presence' of two subscribing Witnesses, on'ths 11th dfyofJanuary, A1 D. 1915.

SAMUEL -DAVID LINDSAY.

with said-lever and sl'clably mounted on one of the guide leales, said last mentioned members point Supports for the end Walls-maintaining said yendl Wallspara'llel in all' o their pos'- Witnesses: tionson said guide bars. EDWARD G. HAUSELT,

In l'testimony whereof I have signed :my A. A; PATCH.

Copies of' this lpatent mayfbe obtained for've cents eal, b'y addressiiigfth Commissioner 'ofv Paie'xns",Y

' Washington; ID.fC."-' 

